World number one Jannik Sinner opened his Australian Open title defence in blazing sunshine with a win over Nicolas Jarry on Rod Laver Arena on Monday that brought the scourge of doping in the sport back into focus.

The men's world No. 1 could face a two-year ban. Here's what to know about the doping proceedings against him so far

Top-ranked tennis player Jannik Sinner will go to sport’s highest court in April for the World Anti-Doping Agency’s appeal that seeks to ban him from the sport for at least one year.

Jannik Sinner launched his Australian Open title defence with a 7-6(2) 7-6(5) 6-1 win over Nicolas Jarry on Monday in a match that put the players' contrasting doping cases in the spotlight. World number one Sinner,

Iga Swiatek, a self-described “control freak,” is taking new precautions — including holding on to extra samples of medicine she takes, in case they need to be tested at some point — after a doping case she describes as probably the worst time in her life.

Jannik Sinner, the world's top-ranked tennis player, will go to sport's highest court in April for the World Anti-Doping Agency's appeal that seeks to ban him from the sport for at least one year.

World number one Jannik Sinner will have his hearing into allegations of doping at the Court of Arbitration for Sport on April 16-17, the Lausanne-based body said on Friday.The World Anti-Doping Agency appealed after the International Tennis Integrity Agency (ITIA) cleared Sinner after he tested positive twice for the banned steroid clostebol in March last year.

The World Anti-Doping Agency's appeal date has been revealed as the doping body seeks to ban Sinner from the sport for at least one year.

Jannik Sinner finds out when he will learn his fate over his drug test appeal - what comes next could be brutal.